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https://support.huawei.com/enterprise/en/knowledge/EKB1000581140
by default, ALUA is disabled. MPIO can not be refreshed automatically, to show that ALUA is supported in windows host. it need reboot the host OS, then when MPIO scan the disk path, ALUA is supported information will be updated. (in this case, if the host already mapped with the LUN)
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http://www.pearsonitcertification.com/articles/article.aspx?p=2819032
Oct 05, 2017 · Not Supported—The response to the REPORT TPGs and SET TPGs commands is invalid. This means that the storage array does not support ALUA or, in the case of EMC CLARiiON, the initiator records are not configured in a mode that supports ALUA. Implicit—The array responds to REPORT TPGs but not SET TPGs commands. In this case, setting the TPG’s AAS is done only by …
https://library.netapp.com/ecmdocs/ECMP1196995/html/GUID-D22C5B1F-060E-4060-A62A-5565AFF2D247.html
ALUA is an industry standard protocol for identifying optimized paths between a storage system and a host. ALUA enables the initiator to query the target about path attributes, such as primary path and secondary path. It also allows the target to communicate events back to the initiator.
https://kb.netapp.com/app/answers/answer_view/a_id/1003251/~/asymmetric-logical-unit-access-%28alua%29-support-on-netapp-storage---frequently
Nov 27, 2017 · ALUA is not supported for iSCSI initiator groups on Data ONTAP 7-Mode systems; How to enable ALUA on non-ALUA LUNs. Validate the host OS and the multipathing software as well as the storage controller software support ALUA. If yes, then proceed. For example, ALUA is not supported for VMware ESX until vSphere 4.0.
https://docs.microsoft.com/en-us/windows-hardware/test/hlk/testref/849bcee9-3305-4889-9645-8c4470f60d9c
ALUA MPIO Test (LOGO) 04/14/2019; 2 minutes to read; In this article. This test verifies whether storage devices support the ALUA feature properly. Asymmetric logical unit access (ALUA) occurs when the access characteristics of one port may differ from those of another port.
https://support.citrix.com/article/CTX132976
Tip: The DM-MPIO, (Device Mapper Multipath I/O) defaults for EMC CX/VNX are for Passive Not Ready (PNR) devices and they need to create a device LUN for ALUA devices or set Failover Mode 4 (FM4) = ALUA (Assymetic Logical Unit Access). EMC Symmetrix (DMX/VMAX) uses the defaults that are already in the OS and there is nothing to change on the ...
https://blogs.vmware.com/vsphere/2012/02/configuration-settings-for-alua-devices.html
Feb 03, 2012 · explicit_support: Shows whether or not the device supports explicit ALUA; this option cannot be set by the user as it is a property of the LUN. explicit_allowed: Shows whether or not the user allows the SATP to exercise its explicit ALUA capability if the need arises during path failure. This only matters if the device actually supports ...
http://www.yellow-bricks.com/2009/09/29/whats-that-alua-exactly/
Sep 29, 2009 · I have asked to HP but not yet received an answer. It’s really not practical for us to get a new SAN, sigh, the iSCSI cards are expensive but cheaper than any other alternatives. Also, for the MSA 2012i, the SAN guide specifically says ALUA and MRU, I imagine this is the only supported configuration… Thank you, Tom
https://www.slideshare.net/AshwinPawar/alua
Sep 23, 2014 · Note: It is recommended to first enable ALUA on the igroups on a storage system prior to discovering it on the Host; if you are enabling it after discovering the LUN, then make sure you reboot the host to detect ALUA. 17. ALUA support on VMware [Courtesy: VMware Knowledgebase ID 1022030] ESX/ESXi 4.1 or ESXi 5.x host supports Asymmetric Logical ...
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